Modeling Specular Highlights Using Bézier Triangles

Author(s):
Russ Brown
Report Number:	Date Published:	Available Formats:
TR-99-75	September 1999	Portable Document Format (PDF) Postscript (PS) Request Hard Copy
Abstract
Rendering specular highlights typically requires interpolation and renormalization of a unit surface normal vector at each pixel of a three-dimensional graphics image. This report discusses a technique for modeling specular highlights using Bézier triangles. This approach avoids computation by identifying those polygons for which it is not necessary to calculate a specular highlight. The use of Bézier triangles to model specular highlights suggests a general technique for modeling, clipping and interpolation of shading functions.

Modeling Specular Highlights Using Bézier Triangles